[] () a stockbroker (= a person who buys and sells shares for other people) who acts alone and takes a lot of risks, sometimes losing a lot of their company's money疯狂交易员；流氓交易员；魔鬼交易员◆The bank revealed that a rogue trader had lost large sums of money in the currency markets.这家银行透露，一名疯狂交易员在货币市场亏损了大笔款项。▸ˌrogue ˈtrading